Air conduction hearing aid



FIG. 1 is an exploded perspective view of an air conduction hearing aid, showing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof. 

The ornamental design of an air conduction hearing aid, as shown and described. 